Window-screen.



E. SWANSON.

WINDOW SCREE,N..,

APPLICATION FILED JAN-15.19M-

Patented Mar. 6, I917. 3 SHEETS-SHEET I hrmme lV/T/VESSES v @Mfl,

E. SWANSON.

. W|N DOW SCREEN. APPLICATION FILED JAN-15,1915.

3 SHEER-SHEET 2.

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SWANSON.

wmoow SCREEN.

APPLICATION FILED JAN-15,1915- v Patented Mar. 17.

' SSHEETS-SHE fr b - view the invention consists in the combina-- UNITED STATES PATENT OFFICE.

ELWIN SWANSON, 0F JAMESTOWN, NEW YORK.

WINDOW-SCREEN.

Specification of Letters Patent.

' Patented Mar. 1917.

Application filed January 15, 1915 Serial No. 2,419.

ed to be wound upon rollers arranged at the head and foot of the window in such a manner that each screen is drawn into operative position as its sash is opened and returned into inoperative position as its sash is closed. Means are provided whereby the screens are operated without the addition of any extra weights and without springs. Means for preventing the influx of insects between the window sashes when both are open are also. provided. The lnvention, further, provides means whereby the screens may be readily attached to or. detached from the sashes as occasion may require.

With the foregoing and other objects in tion and arrangement of parts to be hereinafter fully described in the following specification, pointed-out in the claims and illustrated in the accompanying drawings which form, a part of said specification and in .Which Figure 1 is a front view, partly in-secti'on, of a window provided with the improved Window screen.

Fig. '2 is a vertical section throughthe same taken on line 2 2 of Fig. 1.

Fig. 3 is a sectional detail showing the recess in the jamb for the windowscreen.

Fig. 4 is a vertical sectional view through the window weight box.

Fig. 5 is a section through window showing the screen secured to the top sash for summer use.

Fig. screen detached from the top sash, when not needed in the winter season.

Fig. 7 is a view similar to Fig. 5 but showing a screen secured tothe lower sash.

Fig. -8 is a view similar to Fig. 6 with the lower sash being substituted for the upper sash.

Fig. 9 is a view of one of the roller shafts employed.

Fig. 10 is of Fig. 12.

a section taken on line 10--10 .plates the head of the 6 1s a sectional view showing the Fig. 11 is a section taken on line 11-11 of Fig. 9.

Fig. 12 is a front view of the locking device.

Fig. 13 is an enlarged detail sectional view of a side rail of one window sash showing the manner of fastening the window cord thereto.

Like reference characters indicate corresponding parts throughout the several views.

The reference character 1 designatesthe window casing, 2 the lower sash and 3 the upper sash. To the upper sashI secure a cord 4:, at each side ofsaid sash, and said cords pass over the regular pulleys 5 1n the window amb and about guide pulleys 6 secured to the casing 1 and then about the section 7 of. drums 7, 8 which are disposed upon the roller shafts 9 to which they may be releasably secured by cotter pins 10. The manner of securing the window cord 1 to the upper sash is illustrated in Fig. 13 and as all the cords to be hereinafter described are secured to their respective sashes in a similar manner a description of this fastening means will be sufficient. The side rail A of the sash 2 is formed with a peripheral recess B and provided with stop C, C secured thereto by screws D, D, said plates partially covering said recess except for a clearance E to permit passage of said cord 4 which is knotted at its free end F to prevent its accidental withdrawal from the said recess B. The shaft 9 is journaled in window brackets 11 and is provided with the roll 12 to which the flexible screen 13,

.is secured to the upper sash 3. The regular upper sash weights 15 are connected by cords 16 to the sections 8 of drums 7, 8.

The lower sash 2 is releasably engaged by the lower flexible screen 17 which passes through slot 17 4 nected to and adapted to be wound upon the lower roller 18 of lower roller" shaft 19 which is journaled in lower window brackets 20 and upon said roller shaft lower drums 21, 22 are disposed which may be made fast thereto by cotter pins 23. Cords 24 'connected to drum sections 21 pass over regular pulleys 25 secured to the window'jamb and areconnected to the lower sash 2. Cords 26 connected to sections 22 .of lower drums 21,

of the subsill and is conloo 22-pass over pulleys 27 secured to the casing 1 and carry weights 28 which are the regular lower sash weights; said weights being operatively connected by said cords 24, 26 and drums 21, 22 to the lower sash 2, this connection being undisturbed whether the said drums 21, 22 are loose or fast upon the shaft 19. When the screens 13, 17 are connected, respectively, to sashes 3, 2 the drums 7, 8 and 21, 22 are made fast to their respective roller shafts 9, 19 by means of the cotter pins 10, 23. The weights 15, 28 then cause the rolls of the roller shafts to wind upon themselves the flexible screens as the window sashes are moved into closed position and said screens will unwind as the sashes are moved into open position. In the winter season the screens may be detached and left in the window casing upon their roller shafts. The cotter-pins 10, 23 are now. removed from the drums and passed through openings 29in the brackets 11, 20 and in shafts 9, 19 thereby locking said shafts stationary and leaving the drums loose 'upon said shafts. Raising and lowering of the sashes now will raise and lower the weights but the cords of said weights will pass over and rotate the drums independent of their shafts.

The upper sash is formed with a socket 30 and the lower sash is formed with an aperture 31 through which the bolt 32 provided with handle 33 is projected and adapted for releasable engagement with said socket 30 to retain said sockets in open position, the shape of the upper rail of the lower sash and of the lower rail of the upper sash being such that, in this locked open position, it is impossible for insects to pass therebetween. A socket 34 may also be formed in the lower rail of the upper sash to receive the bolt 32 whereby the sashes may be locked V in closed position.

Without the locking device it will be noted the sashes could not be opened at the same time. The upper sash may be lowered without the use of a window pole by first raising the lower sash into wide open position or until the spring bolt 32 engages the socket 30 and both sashes are then lowered together into half-open position, opening the window at top and bottom.

WVhat is claimed is:

1. The combination with a longitudinally grooved window jamb of a flexible upper screen secured to the upper sash, a flexible lower screen secured to the lower sash, roller shafts for said screens, sectional drums carried by said roller shafts, a weight flexibly connected to one section of each of said drums and flexible connection between the other drum section and one of said sashes.

2. The combination with a longitudinally grooved window jamb, of a flexible upper screen detachably secured to the upper sash, a flexible lower screen detachably secured to the lower sash, roller shafts for said screens, sectional drums terminally carried by said shafts and adapted to'be made fast thereto when said screens are in operative position, flexible connection between said drums and said sashes and means operatively associated with said drums when said screens are in operative position whereby said drums may be given a tension to permit the winding thereupon of said flexible screens.

3. The combination with a longitudinally grooved window jamb, of a flexible upper screen detachably secured to the upper sash, a flexible lower screen detachably secured to the lower sash, a socket formed in the upper and lower railsof the upper sash, a spring bolt carried by the upper rail of the lower sash for releasable locking engagement with either of said sockets, roller shafts .for said screens, sectional drums carried by said roller shafts, a weight flexibly connected to one section of each of said drums and flexible connection between the other drum section and one of said sashes.

4. The combination with a. longitudinally grooved window jamb, of a flexible upper screen detachably secured to the upper sash, a flexible screen detachably secured to the lower sash, roller shafts for said screens disposed in the window casing, means carried by each sash for releasable mutual engagement whereby the lower sash may be operated to open and close the upper sash, sectional drums carried by said roller shafts, a weight flexibly connected to one section of each of said drums and flexible connection between the other drum section and one of said sashes.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two subscribing wit- 1 nesses.

ELWIN SWANSON.

Witnesses:

JOHN P. JoHNsoN, JOHN SAMUELSON. 

